17 Fuel Efficient Cars

Photo by n0hav0cyet94

15. Porsche Cayenne S E-Hybrid

Fuel efficiency: 47 MPGe

The Porsche Cayenne S E-Hybrid is the crossover entry into the fuel efficient auto market by the luxury car manufacturer. The auto enjoys a 47 MPGe and is a plug-in hybrid that retails for $76,400 before the Federal tax rebate is applied to the overall cost of the vehicle. The car can only travel 14 miles on a single charge on the battery without using the gas tank, and sees a gas only fuel efficiency rating of 22 MPG. Although the price point on the Cayenne S E-Hybrid is a bit steep when compared to other hybrid models on the market, it is equivalent to other models of crossover and SUVs previously produced by Porsche.